Wow, this goes against anything I learned in Physics....
You really think that an iGPU "draws only power"?
And what is a dGPU using? Oxygen? Water?
A NVIDIA RTX 2070 Super has a max. TDP of 215 Watt...
and the Intel iGPU? Max. 15 Watt!
You'll never get a CPU to compensate this difference by...